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drm/i915/skl: Add back HDMI translation table

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The HDMI translation table is added back to bspec, so adding it,
and defaulting the 800mV+0dB entry.

The HDMI translation table was removed by following commit as per HW team's
recommendation:
commit 7ff446708b ("drm/i915/skl: Only use the 800mV+2bB HDMI translation entry")

v2: Adding reference to commit which removed this table (Jani)

Cc: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Sonika Jindal <sonika.jindal@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Sonika Jindal 2015-04-15 11:02:33 +05:30 committed by Daniel Vetter
parent 8805aa713e
commit b7192a567c
1 changed files with 12 additions and 10 deletions
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22
drivers/gpu/drm/i915/intel_ddi.c
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@ -155,8 +155,17 @@ static const struct ddi_buf_trans skl_ddi_translations_edp[] = {
static const struct ddi_buf_trans skl_ddi_translations_hdmi[] = {
/* Idx NT mV T mV db */
{ 0x00004014, 0x00000087 }, /* 0: 800 1000 2 */
{ 0x00000018, 0x000000ac },
{ 0x00005012, 0x0000009d },
{ 0x00007011, 0x00000088 },
{ 0x00000018, 0x000000a1 },
{ 0x00000018, 0x00000098 },
{ 0x00004013, 0x00000088 },
{ 0x00006012, 0x00000087 },
{ 0x00000018, 0x000000df },
{ 0x00003015, 0x00000087 },
{ 0x00003015, 0x000000c7 },
{ 0x00000018, 0x000000c7 },
};
enum port intel_ddi_get_encoder_port(struct intel_encoder *intel_encoder)
@ -214,16 +223,9 @@ static void intel_prepare_ddi_buffers(struct drm_device *dev, enum port port)
n_edp_entries = ARRAY_SIZE(skl_ddi_translations_dp);
}
/*
* On SKL, the recommendation from the hw team is to always use
* a certain type of level shifter (and thus the corresponding
* 800mV+2dB entry). Given that's the only validated entry, we
* override what is in the VBT, at least until further notice.
*/
hdmi_level = 0;
ddi_translations_hdmi = skl_ddi_translations_hdmi;
n_hdmi_entries = ARRAY_SIZE(skl_ddi_translations_hdmi);
hdmi_default_entry = 0;
hdmi_default_entry = 7;
} else if (IS_BROADWELL(dev)) {
ddi_translations_fdi = bdw_ddi_translations_fdi;
ddi_translations_dp = bdw_ddi_translations_dp;